In this research, the effectiveness of channel section retrofit on angle section was investigated. Three unique angle section types (2∟25x19x3, 2∟51x32x4.8 and 2∟32x32x6.4) and totally eighteen specimens were tested. The used retrofit channel sections were C64x16 and C100x7). The results indicated that the failure load increased 37.5% - 122% after retrofit. The retrofit method was conclusively effective and easy to be accessed in the field. In addition, finite element analysis was also used to simulate the models of the experimental tests and the parametric study.
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